We report observations on redshift z>4.5 objects identified in
deep narrow-band Lyman \alpha imaging of the fields surrounding the
quasars BR1202--0725 (z=4.695) and BR2237--0607 (z=4.558) and
studied with followup spectroscopy with the LRIS spectrograph on
Keck. Previous narrow-band imaging at the wavelength of redshifted
Lyman \alpha for BR1202--0725 identified emission which coincides with
the continuum light from a faint galaxy seen in Hubble Space Telescope
(HST) WFPC2 images 2.6'' NW of the quasar, and pointing radially towards
it (Hu, McMahon, amp; Egami 1996, Ap. J., 459, L53--L55).
From high resolution tip-tilt imaging (FWHM 0.45'') of this
system at the UH 2.2m telescope in the Lyman \alpha line, we
identify a faint Lyman \alpha emission component coincident with a
second fainter galaxy 3'' SW of the quasar, also pointing radially
towards the quasar in the HST image. This second emission system
near the quasar at z=4.7 is confirmed in multi-slit LRIS spectra taken
on these objects with the Keck 10m telescope. CIV emission is not detected in
these spectra.

For BR2237--0607 based on deep narrow-band Lyman \alpha imaging
followed by spectroscopy using LRIS at Keck,
we identify two Lyman \alpha emitting galaxies at
z=4.55. In contrast to the BR1202--0725 emission-line objects,
these galaxies have separations > 100'' (\sim 700 kpc) from
the quasar, which is unlikely to have a significant role in exciting
them. Observed equivalent widths for the Lyman \alpha line
exceed 1000 Åin each case. While one of these objects is quite
compact, and has no detectable continuum in a 1-hr I-band exposure
at Keck, and thus might be an AGN, the second has a diffuse extended
structure in both continuum and emission, and is probably a star-forming
galaxy. Line fluxes are \sim5\times 10^-17 ergs cm^-2 s^-1.